The purpose of this application, under Articles 29 and 55 of the Code, is to remove the homonymy between the family-group names CHILODONTIDAE Macalister, 1876 (type genus Chilodon Ehrenberg, 1834 [Ciliophora]), CHILODONTINAE, an emen- dation of CHILODINAE Eigenmann, 1910 (type genus Chilodus Müller & Troschel, 1844 [Pisces]), and CHILODONTINAE Wenz, 1938 (type genus Chilodonta Étallon, 1859 [Gastropoda]). It is proposed to place the unused name CHILODONTIDAE Macalister, 1876 on the Official Index; to place the name CHILODONTINAE Eigenmann, 1910, as emended by Fowler (1950), on the Official List; and that the stem of the generic name Chilodonta Étallon, 1859 be deemed to be Chilodonta-, such that the name CHILODONTINAE Wenz, 1938 is emended to CHILODONTAINAE Wenz, 1938.

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